3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( "1" => "A", 1 => "B", "C", 2 => "D"); var_dump(count(array_keys($a))); ?>

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0100.00316.38
8.3.50.0180.00322.01
8.3.40.0070.00718.72
8.3.30.0070.01018.92
8.3.20.0050.00220.34
8.3.10.0020.00521.74
8.3.00.0040.00419.07
8.2.180.0080.01218.29
8.2.170.0070.00718.96
8.2.160.0000.02022.96
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0000.00919.66
8.2.110.0070.01022.16
8.2.100.0040.00818.03
8.2.90.0000.00819.23
8.2.80.0040.00417.97
8.2.70.0060.00617.38
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0000.01017.91
8.2.30.0030.00619.44
8.2.20.0000.00717.79
8.2.10.0000.00718.04
8.2.00.0000.00817.53
8.1.280.0110.00425.92
8.1.270.0040.00418.74
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0080.00021.82
8.1.230.0040.00819.10
8.1.220.0080.00017.74
8.1.210.0060.00318.77
8.1.200.0000.00817.23
8.1.190.0030.00617.13
8.1.180.0030.00619.01
8.1.170.0060.00318.45
8.1.160.0040.00421.93
8.1.150.0070.00018.80
8.1.140.0000.00819.23
8.1.130.0030.00317.83
8.1.120.0070.00017.54
8.1.110.0020.00517.47
8.1.100.0050.00217.46
8.1.90.0070.00017.45
8.1.80.0000.00717.37
8.1.70.0030.00317.43
8.1.60.0000.01017.43
8.1.50.0030.00617.53
8.1.40.0030.00617.32
8.1.30.0030.00517.67
8.1.20.0040.00417.69
8.1.10.0070.00017.44
8.1.00.0030.00517.38
8.0.300.0000.00818.77
8.0.290.0000.00916.75
8.0.280.0030.00318.34
8.0.270.0000.00717.20
8.0.260.0030.00317.20
8.0.250.0070.00016.86
8.0.240.0030.00616.80
8.0.230.0000.00716.79
8.0.220.0040.00416.73
8.0.210.0000.00716.82
8.0.200.0000.00816.88
8.0.190.0040.00416.83
8.0.180.0000.00816.86
8.0.170.0080.00016.84
8.0.160.0070.00016.77
8.0.150.0090.00316.73
8.0.140.0070.00316.82
8.0.130.0050.00013.28
8.0.120.0050.00316.77
8.0.110.0070.00016.77
8.0.100.0050.00216.77
8.0.90.0050.00216.88
8.0.80.0110.01116.86
8.0.70.0070.00016.73
8.0.60.0000.00816.91
8.0.50.0000.00716.83
8.0.30.0100.01317.07
8.0.20.0070.01217.40
8.0.10.0080.00016.83
8.0.00.0110.00816.71
7.4.330.0020.00215.03
7.4.320.0000.00616.50
7.4.300.0040.00416.50
7.4.290.0000.00616.59
7.4.280.0070.00016.60
7.4.270.0030.00316.61
7.4.260.0030.00316.35
7.4.250.0030.00316.38
7.4.240.0030.00316.51
7.4.230.0040.00416.70
7.4.220.0040.01516.41
7.4.210.0110.00416.47
7.4.200.0030.00316.47
7.4.160.0060.00916.50
7.4.150.0070.01017.40
7.4.140.0130.00817.86
7.4.130.0100.00616.52
7.4.120.0070.00916.45
7.4.110.0240.00016.40
7.4.100.0100.00716.54
7.4.90.0170.00016.58
7.4.80.0120.00619.39
7.4.70.0100.00716.37
7.4.60.0060.01616.57
7.4.50.0000.00416.57
7.4.40.0130.00416.64
7.4.30.0030.01416.46
7.4.00.0060.00914.64
7.3.330.0020.00513.00
7.3.320.0000.00613.04
7.3.310.0070.00016.21
7.3.300.0000.00615.98
7.3.290.0100.00516.19
7.3.280.0110.00516.23
7.3.270.0070.01617.40
7.3.260.0140.00316.36
7.3.250.0080.01016.48
7.3.240.0040.01216.16
7.3.230.0090.00916.39
7.3.210.0160.00016.36
7.3.200.0000.01619.39
7.3.190.0060.00916.27
7.3.180.0080.00816.13
7.3.170.0080.00916.27
7.3.160.0000.01616.32
7.3.120.0140.00314.94
7.3.110.0070.01114.66
7.3.100.0070.00715.01
7.3.90.0090.00614.70
7.3.80.0070.00314.91
7.3.70.0090.00314.50
7.3.60.0090.00614.75
7.3.50.0030.01014.36
7.3.40.0040.00414.63
7.3.30.0030.00714.59
7.3.20.0030.00916.55
7.3.10.0040.01116.71
7.3.00.0000.01216.36
7.2.330.0140.00416.60
7.2.320.0060.01316.60
7.2.310.0120.00616.45
7.2.300.0080.00816.58
7.2.290.0060.01216.34
7.2.250.0160.00314.71
7.2.240.0100.00715.00
7.2.230.0070.01014.85
7.2.220.0060.00614.86
7.2.210.0040.01515.10
7.2.200.0030.01014.82
7.2.190.0000.01114.60
7.2.180.0000.01414.64
7.2.170.0030.00614.83
7.2.60.0030.01016.68
7.2.50.0060.00916.88
7.1.330.0070.00715.77
7.1.320.0070.00715.81
7.1.310.0080.00815.57
7.1.300.0000.01215.69
7.1.290.0000.01115.59
7.1.280.0040.00715.52
7.1.270.0100.00015.78
7.1.260.0030.00615.51
7.1.200.0110.00415.75
7.1.70.0050.00317.06
7.1.60.0060.01919.46
7.1.50.0090.00616.76
7.1.00.0000.07722.28
7.0.200.0040.00416.79
7.0.140.0000.08722.09
7.0.60.0300.05320.04
7.0.50.0070.03717.90
7.0.40.0130.03320.12
7.0.30.0300.08020.02
7.0.20.0370.06720.16
7.0.10.0200.08020.16
7.0.00.0030.08720.30
5.6.280.0000.07721.10
5.6.210.0100.07020.70
5.6.200.0070.04018.17
5.6.190.0130.08020.67
5.6.180.0500.07320.61
5.6.170.0470.07320.38
5.6.160.0100.08020.48
5.6.150.0100.08018.19
5.6.140.0100.07018.21
5.6.130.0000.07018.12
5.6.120.0070.05720.99
5.6.110.0070.06321.14
5.6.100.0070.06720.97
5.6.90.0100.07720.98
5.6.80.0100.07320.38
5.5.350.0400.07320.40
5.5.340.0000.04717.97
5.5.330.0070.08720.07
5.5.320.0030.08720.28
5.5.310.0270.05020.14
5.5.300.0030.08317.92
5.5.290.0070.08017.98
5.5.280.0030.08720.87
5.5.270.0100.03320.72
5.5.260.0000.05020.86
5.5.250.0100.08320.68
5.5.240.0100.07320.25
5.4.450.0370.06319.53
5.4.440.0830.06319.13
5.4.430.0130.05319.56
5.4.420.0730.05719.50
5.4.410.0670.06019.30
5.4.400.0630.05719.13
5.4.390.0300.06018.60
5.4.380.0230.07018.50
5.4.370.0170.05718.46
5.4.360.0230.05018.69
5.4.350.0270.05318.66
5.4.340.0300.06318.71
5.4.320.0130.08318.45
5.4.310.0200.07318.67
5.4.300.0330.05718.58
5.4.290.0270.05318.50
5.4.280.0230.04718.52
5.4.270.0200.05718.60
5.4.260.0200.05018.71
5.4.250.0170.06018.72
5.4.240.0300.05018.71
5.4.230.0230.05318.45
5.4.220.0230.07318.59
5.4.210.0300.06318.69
5.4.200.0230.05016.48
5.4.190.0230.06018.57
5.4.180.0400.05318.64
5.4.170.0170.07318.47
5.4.160.0200.07018.62
5.4.150.0170.07318.67
5.4.140.0200.06316.05
5.4.130.0230.06316.04
5.4.120.0130.06716.13
5.4.110.0270.06016.04
5.4.100.0100.06016.04
5.4.90.0200.05716.24
5.4.80.0200.04716.33
5.4.70.0230.04716.34
5.4.60.0930.05316.28
5.4.50.0130.06716.13
5.4.40.0230.05016.27
5.4.30.0230.04316.22
5.4.20.0230.06316.28
5.4.10.0230.06016.12
5.4.00.0200.06315.70
5.3.290.0230.07014.63
5.3.280.0230.05314.69
5.3.270.0070.07014.57
5.3.260.0030.07014.51
5.3.250.0130.05714.63
5.3.240.0170.07314.65
5.3.230.0130.07314.56
5.3.220.0130.05714.54
5.3.210.0200.06314.45
5.3.200.0200.05314.59
5.3.190.0230.05014.47
5.3.180.0200.07014.56
5.3.170.0100.07014.55
5.3.160.0200.07014.52
5.3.150.0100.06314.48
5.3.140.0200.06714.44
5.3.130.0200.07014.54
5.3.120.0230.06714.52
5.3.110.0270.06314.63
5.3.100.0230.04714.03
5.3.90.0200.06014.12
5.3.80.0230.05313.96
5.3.70.0230.06013.98
5.3.60.0270.06013.89
5.3.50.0170.07313.86
5.3.40.0300.06013.92
5.3.30.0170.05013.87
5.3.20.0170.06013.78
5.3.10.0200.05013.57
5.3.00.0100.06013.63
5.2.170.0130.04711.19
5.2.160.0170.05711.20
5.2.150.0170.05011.28
5.2.140.0170.05711.13
5.2.130.0170.05711.08
5.2.120.0200.04711.07
5.2.110.0270.05011.15
5.2.100.0230.04011.02
5.2.90.0070.05711.14
5.2.80.0100.06011.15
5.2.70.0230.05011.25
5.2.60.0030.05311.18
5.2.50.0230.03710.97
5.2.40.0130.04710.97
5.2.30.0170.05010.95
5.2.20.0270.03710.99
5.2.10.0100.04311.00
5.2.00.0170.03710.70
5.1.60.0100.03710.02
5.1.50.0100.04710.06
5.1.40.0130.04310.04
5.1.30.0170.04010.31
5.1.20.0100.04010.37
5.1.10.0170.04710.09
5.1.00.0130.04010.10
5.0.50.0100.0408.89
5.0.40.0070.0378.89
5.0.30.0100.0508.89
5.0.20.0130.0308.89
5.0.10.0070.0408.89
5.0.00.0170.0408.89
4.4.90.0000.0308.89
4.4.80.0130.0238.89
4.4.70.0070.0308.89
4.4.60.0070.0238.89
4.4.50.0070.0238.89
4.4.40.0130.0408.89
4.4.30.0100.0238.89
4.4.20.0130.0238.89
4.4.10.0070.0238.89
4.4.00.0100.0408.89
4.3.110.0130.0208.89
4.3.100.0070.0238.89
4.3.90.0030.0278.89
4.3.80.0070.0378.89
4.3.70.0100.0278.89
4.3.60.0070.0278.89
4.3.50.0100.0278.89
4.3.40.0030.0508.89
4.3.30.0000.0278.89
4.3.20.0030.0238.89
4.3.10.0030.0308.89
4.3.00.0070.0309.38

preferences:
46.56 ms | 401 KiB | 5 Q